Oil burner



Patented Dec. 19, 192?.v

1,439,186 PATENT OFFICE.

CLYDE W. MUMMERY, OF DETROIT, MICHIGAN.

OIL BURNER.

Application filed November 23, 1921. Serial No. 517,229.

To all whom it may concern:

Be it known that I, CLYDE W. MUMMERY, a citizen o'f the United States,residing at Detroit, in the county of Wayne and State of Michigan,haveinvented certain new and useful Improvements in Oil Burners, ofwhich the following is a specification.

This invention relates to oil burners of the wickless type, especiallysuitable for burning kerosene, and in which the combustible vapor isgenerated after starting, by means of heat communicated to the walls ofa generating chamber or trough above which is a pair of inner and outershells which are perforated to supply air to the mixture and the flame.

' The object of the present invention is to simplify and cheapen thestructure of such a burner; improved meansifor supplymg airto themixture, this air being heated to assist 1n vaporization. A furtherobject is to provide improved means for supplying air to the flame at orabout the point of combustion.

Further objects and advantages Wlll appear from the followingdescription and the accompanying drawings in which F g. 1 s a verticalsection of the burner. Fig. 2 1s a section on the line 2-2 of Fig. 1.

Referring specifically to the drawings, 6

indicates an oil supply pipe controlled bya suitable valve 7. This pipedischarges through an opening 8 into the base of the burner whichconsists of a trough 9 which in the formshown is annular, the troughbeing substantially V-shaped in cross section, and above th oil line theinner and outer walls or sides of the trough are provided with air holes10 and 1 1. to admit a suitable amount of air into the trough above theoil therein.

Upon the top of this trough rests the burner body which consistsprincipally of two concentric tubular shells, the inner one beingindicated at 12 and the outer one at 13. These rest on opposite edges ofthe trough and form a mixing and combustion chamber therebetween. Theinner shell 12 is closed at the top as indicated at 12, and

the mixing and combustion space 14, be

A further object is to provide' surrounded by a thin metal casing 17which depends from the flaring lip or rim of the shell, and the casing17 is open at the bottom so that air may enter within the same where itis heated before being supplied to the combustion space. Near its upperend the shell 13 has a row of relatively large holes 18, and also, nearits extreme end or upper edge has a row of similar holes 19,

and air will flow through these holes to the flame at the top of thecombustion space.

The pipe 6 is threaded into a hollow boss 20 and extending verticallythrough and across the chamber in this boss is an air pipe 21. This pipeis open at the bottom as indicated at 22 but is closed at the top by acap 23. It projects upwardly into the space between the shell 13 and thecasing 17 and is preferably located in contact with the former so thatit will conduct heat therefrom. In the chamber of the boss 20 the pipehas a plurality of holes 24 located slightly above the oil line or leveland arranged to discharge heated air into the boss. The outer wall ofthe trough 9 has a circular downwardly inclined flange 25 at its rimwhich assists in directing the air toward or into the holes 11.

In operation, the burner may be started with gasoline or alcohol bypouring a small amount into the trough and lighting the same, and theflame from the gasoline or alcohol will create heat enough to start thegeneration of the oil which is admitted into the trough from the pipe 6.As the burner becomes heated, the air in the pipe 21 will flow or bedrawn through the holes 24 in said pipe into the chamber in the boss,and this air mixes with thevaporized oil, the point of vaporizationbeing within the chamber of the boss 20. The air is drawn in by thesuction of the flame between the burner shells 12 and 13, and themixture, including unvaporized oil if any, flows through the hole 8into' the trough where the vaporization. is completed and the vaporburns between the shells 1'2 and 13 and at the top thereof, additionalair being supplied through the holes in the shells as well as throughthe large holes 18 and 19 at the top. Any air not necessary forimmediate combustion will flow through the holes 19 around the outsideof the flame.

A burner so constructed will generate and burn kerosene Without smoke orodor, producing a blue flame of high heating quality, without requiringthe use of a wick.

The burner shells can be readily lifted oil the base trough to permitcleaning of the latter if and when necessary.

I claim:

1. A burner comprising a' lower trough, and spaced perforated shellsstanding thereon, an inlet oil chamber discharging into the trough, andmeans to supply heated air to said chamber.

2. A burner comprising a lower oil trough, spaced perforated shellsstanding thereon, a hollowinlet chamber discharging into the trough, andan air pipe standing beside one of the shells and having dischargeopening into said chamber. I

3. A burner comprising a lower oil trough, spaced perforated shellsstanding thereon, a hollow inlet chamber discharging into the trough,and an air pipe standing beside one of the shells and having dischargeopenings into said chamber, the lower end of said pipe extending acrosssaid chamber and being provided with said openings therein.

4. A burner comprising a lower oil trough, a pair of spaced perforatedshells standing thereon, an oil supply chamber opening into.

the trough, and an air pipe extending across said chamber and standingbeside one of the shells, said pipe'being open at the bottom and closedat the top, and having holes opening into said chamber.

5. A burner comprising a lower generating trough, inner and outer spacedshells standing above said trough, said shells having a plurality ofsmall holes through the same, the outer shell being flared at the top,said flared portion having a row of larger openings.

6. A burner comprising a generating trough, a pair of spaced perforatedconcentric shells standing above the same, the outer shell being flaredat the top, and having a row of relatively large holes at the top of thespace between the shells, and

having another row of relatively large holes near the outer edge of theflared part thereof.

In testimony whereof, I afiix my signature in presence of two witnesses.

CLYDE W. MUMMERY. Witnesses:

MYRTLE C. HENAGIN, LORE'I'IA MUMMERY.

